Phonic apparatus.



No. 783,750. PATENTBD FEB. 20, 1905.

D. HIGHAM.

PHNIG AFPARA'IUSk APPLICATION FILED M012. 1904.

Litio. VSSCL .irren Strarns Patentec'i February BIB, lQti.

artisti* ritten.

DANIEL I-IIGHAM, OF BRIDGEPORT, CONNECTICUT, ASSIGNOE 'IO I-IIinrIIAli/I- @PHONE COMPANY, OE JERSEY CITY, NEXV JERSEY, A CORPORAIIION FHQNIO APPARATUS..

SPECIFICATION formingpart of Letters Patent N0. 783,750, dated February 2B, 1905 Application filed December 12, 1904. Serial No. 236,609*

Be it known that l, DANIEL HIGIAIAM, oi' l-ridgeport, Connecticut, have invented a new and useful Improvement in Phonic Apparatus, which invention is fully set forth in the .iollowing specilieation.

This invention relates to phonic apparatus employing' friction means 'for reproducing sound vibrations with increased energy, as de- A scribed in my United States patentdated July 2O thereby maintain the frictional iioree exerted and shoe.

at a practically uniform amount.

The invention can best be described in connection with the accompanying drawings, in which Figure l diagrammatically represents said invention as applied to graphophonic reproducing means. Eig. 2 is a plan view oi' part ot' the apparatus shown in Fig. l. Eig. 3 is a view in cross-section oil the friction roller lEig. 4 is a diagram illustrating' another mode ol. carrying out the invention, and Eig. 5 represents the invention as applied to telephonie relnoducing means.

ln Eig. l, 2 is a friction-roller supported by a spindle 3 and revolved in the direction olf the arrow Vfrom a suitable source ot motive.

power. i and represent, respectively, the two parts ot' a friction-shoe connected together in the present instance by a small link 6. The

40 shoe extends more than half-way around roller 2. 7 is a link connecting' the part 5 to a diaphragm 8, the latter being supported by a trame 9, (shown 1n cross-section.) 10 is a link means. 15 is a swinging bearingl for spindle Si, hinged upon a pin A16, 'and 1T is a weight to lend retarding inertia to'spindle 3 and to cause the friction-roller 2te press by gravity upon the shoe t In Eig. 2 roller 2, spindle 3, weight 1T, swinging bearing 1,5, and pin i6 are shown together with a coupling-socket For spindle 3, (shown in cross-section at 18,) which permits of movement olE swinging bearing l5.

In Eig. 3 roller 2 and shoe parts 1; and 5 are shown in cross-section through the line w 1.1, Eig. l, 'from which it will be seen that roller 2 is slightly grooved or tt-shaped to guide the shoe parts i and 5 and that shoe part 5 is much wider than shoe part a.

In Eig. L simiiar reference-numcrals indicate similar parts shown in E 1, 2, and 3; but in this modiiication ot' the invention the roller 2 is revolved by spindle 3 about a lined point or axis, while the frame il, support ing diaphragm S, in the present instance is made to swing upon a pin IS), and a spring 20, connecting trame 9 to a pin 21 is used to support frame i) movably against the `trictional torce exerted by roller 2.

lin Eig. 5 similar parts shown in Figs. 1, 2, and 3 are also indicated by similar referencenumerals; but in this application of the invention a telephone-lecciver is diagrammatically represented as means lor operating lever 1l, and a telerhonetransmitter is diagrammatic' ally represente] as means for responding to the reproducir-al sound-vi nations.

',lhe operation o1E the lrietion moans indepemlently olI my present invention is brielly as follows: Sonorous vibrations which are imparted tolever Il, by suitableprimary vibrating means will produce through link 1l) corresponding vibrations or variations in the amount ol pressure exerted by shoe parts #it and 5 upon roller 2, and thereby ellect corresponding vibrations or variations in the 'Frietional force exerted through lilik T upon suitable secondary vibrating means, substantially as described in my abeve-mentioned patent ci' July 16, 1901. 'Io eli'ect automatic adjust means for permitting' movement to take place between the friction means and the secondary vibrating' means in accordance with the amount of frietional force exerted between the same. In Fig. 1 this movement is permitted to take place by means of the swinging bearing 15 supporting spindle 3 and hing'ed at 16, while in Fig. 4 it is permitted to take place b y means of the swinging' frame 9, hinged at 19 and elastically supported by the spring 20.

The operation of my present invention will be readily understood, for it will be seen that the frictional force exerted by the rotation of theroller 2 upon diaphragm 8 or other suitable secondary vibrating means could not var v und uly, inasmuch as an increase of frietional force would tend to move shoe parts 4 and 5 farther around the roller 9. in the direction of primary vibrating' means," the Y vibrating means responding' to sound-vibrations set up by the friction means as secondary vibrating' means, the part of the friction-shoe farthest in the direction of rotation of frictionbetween the roller 2 and diaphragm 8, Figs.

1 and 4, whereby the pressure imparted,

through link 10 in supporting' shoe parts 4 and 5 in frietional contact with roller Q would be reduced, thereby checking' or counterbalancing' the increased frietional force, and vice versa. The automatic adjustment of the friction means is thus effected. It will further be understood that the inertia of the parts, which are made movable in order to effect this automatic adjustment, will be sufficiently great to prevent interference with the vibrations in frietional force corresponding to sound-waves.

The advantage of having shoe part 5 wider than shoe part 4, as shown in Fig'. 3, is most noticeable with the use of a friction-roller, composed of amber or other similar material IV hen the pressure of shoe part 4 is increased by the means herein provided for automatic j adjustment of the friction means, the shoe part 4 will tend to wear the friction-roller away in the middle of the groove and tend to leave only the outer edges of the groove for the shoe part whereby the pressure of shoe part 5 will be increased in proportion to the arca of frietional surface, and, vice versa, a decreased pressure of shoe part 4 will effect a decreased pressure per amount of frietional surface of shoe part 5, thus making the automatic adjustment of friction means most efficient.

It should be understood that the present invention may be applied to any kind of phonic apparatus employing a friction means and that modifications of the precise arrangement of parts herein diagrammatically represented may be made without departing from the spirit and scope of the invention.

In the claims which follow the friction-roller and shoe parts will be referred to as friction means," the vibrating' means setting' up a secondary vibrating means, and a friction means, in combination with means for permitting' movement between the said friction means and said secondary means.

2. In a phonie apparatus, the combination of a secondary vibrating means, a friction device, means permitting one of said parts to move toward and away from the other part as the frietional force increases or diminishes, and a primary vibrating means,

3. In phonic apparatus, a primary and a secondary vibrating' means, and a friction means, in combination with means permitting' movementsof said friction means in response to the frietional force exerted, said movement being' sufficient to e'ect automatic adjustment of the friction means, substantially as described.

4. In a phonic apparatus, the combination of primary and secondary vibrating' means and intermediate friction means, with means permitting' movement of said friction means toward and away from said secondary vibrating means as the frietional force increases or diminishes.

5'. In a phonic apparatus, the combination of primary and secondary vibrating' means, and intermediate friction means, one member of which rests by gravity upon the other and is supported to have freedom of movement toward and from the secondary vibrating' means.

6. In a phonic apparatus, the combination of primary and secondary vibrating' means, and intermediate friction means comprising a friction-roller carried 4by a shaft which rests by gravity upon a friction-shoe constituting' the other member.

7. In a phonic apparatus, a friction means including a friction-shoe whereof one part has greater frietional surface than the other part thereof for the purpose described.

8. In a phonic apparatus, a friction means including a friction-shoe whereof the rear part has a greater area of frietional surface than the forward part thereof.

9. In a phonic apparatus, a friction means including' a friction-roller and a shoe extending more than half-way around said roller, and composed of two parts hinged together.

10. In phonic apparatus, the combination of a primary anda secondary vibrating means, an intermediate friction device, and means sound-vibrations at the friction means as i permitting' relative movement between one IOO TIO

oi seid Vibrating means and Said friction de- .In testimony whereof I have signed this speeinezition in the presence of two subserlb- I0 ing' Witnesses. l

DANIEL I-IIGIQIAN.

Witnesses:

A. B. Knopen, C. A. Gummi. 

